While each one has a noun counterpart that is explicitly a noun, why is it that only
subconscious is also used as a noun while
conscious is not?
Some background info on
subconsciousness have slightly different meanings, even both as nouns. But that still begs the question, "Why not the symmetrical counterpart to
I'm going to give the benefit of the doubt and ask the question openly and give it all objective reasoning, but my most probable hypothesis is that English & people are quite asystematic, and this is just an ad hoc clusterfrack phenomenon of language evolving without thought... or subconsciously, if you'll permit my bastardization of that term.